I use a Raise macro to show who I'm bringing back as well. Like other people have already mentioned, it saves the other healer's MP and swiftcast if they notice it, but that's not a huge deal. More importantly, the second line of the macro reminds the person being Raised that they will Raise where I cast the spell and that they should wait until a safe moment to respawn. It's saved me from more than one headache.

I might work in a macro with Shroud of Saints to announce my current MP level. Might actually help on some fights.